Solar energy collector for heating air has closed air circuit and has transparent front window, air space and perforated solar energy collector grid through which air can flow

摘要

There is an air gap (5) between the transparent glass window (3) and the perforated grid (6), which is filled with cool air flowing in from air channels (8,10) at the bottom. The air flows upward between the window and the grid and flows through the grid, picking up heat, into a space between the grid and the wall (2,31) the hot air flows out through channels (9) to a heat reservoir (11).